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51867682284 = 223111747224921
BaseRepresentation
bin110000010011100011…
…100000010111101100
311221212202012021001210
4300103203200113230
51322211111313114
635454440234420
73514221011415
oct602343402754
9157782167053
1051867682284
111aaa6a55430
12a07646ba10
134b77999682
1427207c480c
15153881c259
hexc138e05ec

51867682284 has 48 divisors (see below), whose sum is σ = 132102988416. Its totient is φ = 15708412800.

The previous prime is 51867682259. The next prime is 51867682289. The reversal of 51867682284 is 48228676815.

It is not an unprimeable number, because it can be changed into a prime (51867682289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118144 + ... + 343064.

It is an arithmetic number, because the mean of its divisors is an integer number (2752145592).

Almost surely, 251867682284 is an apocalyptic number.

It is an amenable number.

51867682284 is an abundant number, since it is smaller than the sum of its proper divisors (80235306132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51867682284 is a wasteful number, since it uses less digits than its factorization.

51867682284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226686 (or 226684 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 57.

The spelling of 51867682284 in words is "fifty-one billion, eight hundred sixty-seven million, six hundred eighty-two thousand, two hundred eighty-four".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 1747 3494 5241 6988 10482 19217 20964 38434 57651 76868 115302 224921 230604 449842 674763 899684 1349526 2474131 2699052 4948262 7422393 9896524 14844786 29689572 392936987 785873974 1178810961 1571747948 2357621922 4322306857 4715243844 8644613714 12966920571 17289227428 25933841142 51867682284